thenceforward
Adverb (also written as "thenceforward") - From that time onward: "Thenceforward" means from a specified point in time and continuing into the future. It indicates a starting point in the past or present from which an action, state, or condition persists indefinitely.
- (From that moment onward, he could not walk unaided.)
- (From that declaration onward, the kingdom experienced wealth and stability.)
- (From her resolution onward, her academic performance consistently got better.)
"thenceforward" vs. "thenceforth": Both words are synonyms, but "thenceforward" often emphasizes a continuous or ongoing state, while "thenceforth" can be used more generally for a point of change. However, they are largely interchangeable in modern usage.
- The treaty was signed; thenceforward, trade flourished. (Emphasizes the ongoing nature of the flourishing.)
- The treaty was signed; thenceforth, trade flourished. (Simply marks the beginning of the flourishing.)
Literary and formal register: "Thenceforward" is primarily used in formal, historical, or literary contexts. It is rarely used in everyday conversation.
Thenceforth (adv): from that time on (synonym).
- Thenceforth, he was known as a hero. (From that time, he was called a hero.)
Thence (adv): from that place; from that time.
- He traveled to London, and thence to Paris. (From London, he went to Paris.)
From then on: a common, less formal phrase meaning the same.
- From then on, she never missed a practice. (Starting at that time, she always attended practice.)
Thereafter: after that time.
- He left the company; thereafter, he started his own business. (After leaving, he began a business.)
From that day forward: a more colloquial equivalent.
- From that day forward, they were inseparable. (Starting on that day, they were always together.)
Ever after: often used in fairy tales to indicate a permanent state.
- They lived happily ever after. (They lived in happiness from that time onward.)